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EP2066518B1 - Fuel delivery unit for a motor vehicle - Google Patents

Fuel delivery unit for a motor vehicle Download PDF

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Publication number
EP2066518B1
EP2066518B1 EP07820186A EP07820186A EP2066518B1 EP 2066518 B1 EP2066518 B1 EP 2066518B1 EP 07820186 A EP07820186 A EP 07820186A EP 07820186 A EP07820186 A EP 07820186A EP 2066518 B1 EP2066518 B1 EP 2066518B1
Authority
EP
European Patent Office
Prior art keywords
fuel
swirl pot
delivery unit
base
fuel delivery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP07820186A
Other languages
German (de)
French (fr)
Other versions
EP2066518A1 (en
Inventor
Karl Eck
Dieter Hagist
Matthias Kadler
Martin Maasz
Oliver Schönert
Michael Teichert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Automotive GmbH
Original Assignee
Continental Automotive GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental Automotive GmbH filed Critical Continental Automotive GmbH
Publication of EP2066518A1 publication Critical patent/EP2066518A1/en
Application granted granted Critical
Publication of EP2066518B1 publication Critical patent/EP2066518B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0017—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor related to fuel pipes or their connections, e.g. joints or sealings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/077—Fuel tanks with means modifying or controlling distribution or motion of fuel, e.g. to prevent noise, surge, splash or fuel starvation

Definitions

  • the invention relates to a fuel delivery unit for a motor vehicle having a arranged in a surge pot fuel pump for delivering fuel from the swirl pot in a flow line, with a suction jet pump for conveying fuel into the swirl pot, with a leading from the fuel pump to a nozzle of the swirl pot Propellant line and with a opening into the swirl pot mixing tube of the ejector, wherein the swirl pot has a jacket attached to a bottom, the bottom of the fuel pump facing upper part and a fuel pump facing away base, and wherein the upper part and lower part are sealed against each other and between the upper part and the lower part of the bottom fuel-carrying areas are arranged.
  • Such fuel delivery units are widely used in today's motor vehicles and are known in practice.
  • individual components are inserted into the generally one-piece swirl pot and connected to each other.
  • a protruding from the fuel pump connection for a flow line usually protrudes from the swirl pot.
  • fine filter is often located within the baffle pot, the flow line is led by the fuel pump back into the swirl pot to the fine filter.
  • a branch from the feed line to the provided for filling the surge pot suction jet pump is performed. This leads to a very large space of the known fuel delivery unit and a complex assembly.
  • Known fuel delivery units are eg in the EP 0959242 A1 and the EP 1103717 A1 described.
  • subregions of fuel-carrying areas such as the lines
  • the upper part and the lower part preferably form cup-shaped components which receive portions of the lines. These cables therefore no longer have to be mounted separately. From the surge chamber protruding components can be easily avoided. Furthermore, it is possible by an appropriate arrangement of the parting plane in the bottom, to manufacture the upper part and the lower part in each case as an axially demolding injection molded parts.
  • the invention is based on the problem, a fuel delivery unit of the type mentioned in such a way that it is particularly simple and compact.
  • the fuel delivery unit according to the invention is characterized in that the fuel-carrying regions of the bottom have a section of a supply line leading from the fuel pump to the fine filter disposed in the surge pot, wherein the portion of the supply line is partially bounded by the upper part and the lower part of the bottom.
  • the upper part and the lower part are each designed half shell-shaped and are to limit the portion of the flow line to each other. This contributes to a particularly compact construction of the fuel delivery unit according to the invention.
  • the fuel-carrying regions of the bottom have the mixing tube of the suction jet pump, wherein the mixing tube is partially formed by the upper part and by the lower part.
  • the upper part and the lower part are each designed half-shell-shaped and are adjacent to the boundary of the mixing tube. This contributes to a particularly compact construction of the fuel delivery unit according to the invention.
  • the upper part of the bottom and the jacket seal a fine filter arranged in the swirl pot.
  • the structural complexity for precise alignment of the components of the base plate can be kept particularly low according to another advantageous embodiment of the invention, when the upper part and the lower part of the bottom each have adjacent, annular edges.
  • the upper part and the lower part have mutually corresponding form-fitting surfaces, with which they engage positively in one another.
  • the mixing tube of the suction jet pump could, for example, open into a closed chamber of the surge pot with a bottom valve. To further reduce the number of components of the fuel delivery unit according to the invention, however, it contributes, when the mixing tube is sealingly connected to an integrally made with the jacket of the surge pot riser and if the riser into a remote from the ground area of the intended maximum level of the Swirl pot is guided. Due to this design, the swirl pot requires no bottom valve, since the length of the riser limits the level in the swirl pot. Since the riser pipe is arranged on the casing of the swirl pot and extends over a portion of its height, the swirl pot together with the riser tube can be manufactured particularly cost-effectively in an axially demoulding injection mold.
  • the assembly of the fuel delivery unit according to the invention is particularly simple when connections of the nozzle of the suction jet pump and the portion of leading from the fuel pump to the fine filter feed line are aligned perpendicular to the surface of the bottom of the swirl pot.
  • This design makes it easy to attach the fuel pump axially on the connections and is fully assembled.
  • An intake port of the fuel pump preferably opens into the bottom region of the surge pot.
  • FIG. 1 schematically shows a arranged in a fuel tank 1 of a motor vehicle fuel delivery unit 2 for conveying fuel to an internal combustion engine 3 of a motor vehicle.
  • the fuel delivery unit 2 sucks fuel from the bottom area of the fuel tank 1 and promotes this in a leading to the engine 3 feed line. 4
  • FIG. 2 shows greatly enlarged a sectional view of the fuel delivery unit 2 from FIG. 1 with a arranged in a swirl pot 5, electrically operated fuel pump 6.
  • a fine filter 7 is also arranged in the swirl pot 5.
  • the swirl pot 5 has a base 9 connected to a jacket 8.
  • the bottom 9 and the jacket 8 seal the fine filter 7.
  • the bottom 9 also has an ejector 10.
  • the suction jet pump 10 is supplied with fuel from the fuel pump 6 as a propellant, sucks in fuel from the environment of the swirl pot 5 and promotes this in the swirl pot 5.
  • the ejector 10 has a nozzle 11 connected to the fuel pump.
  • the jacket 8 of the swirl pot 5 is integrally connected to a riser 12.
  • the riser 12 is connected to a arranged in the bottom 9 mixing tube 13 of the suction jet pump 10. Furthermore, a section 14 of the supply line 4 leads from the fuel pump 6 to the fine filter 7 through the bottom 9. Another, viewed in the flow direction behind the fine filter 7 section 15 of the flow line 4 is made in one piece with the jacket 8 of the swirl pot 5.
  • FIG. 3 shows greatly enlarged the bottom 9 of the swirl pot 5 from FIG. 1 , It can be seen here that the base 9 has an upper part 16 and a lower part 17 sealingly connected to the upper part 16.
  • the upper part 16 and the lower part 17 each form a part of the mixing tube 13 of the suction jet pump 10 and leading from the fuel pump 6 to the fine filter section 14 14 of the supply line 4.
  • Connections 18 of disposed between the fuel pump 6 and the fine filter section 14 of the flow line 4 and the suction jet pump are aligned perpendicular to the surface at the bottom 9, so that in FIG. 2 shown fuel pump 6 can be easily attached for mounting.
  • FIG. 3 shows FIG. 3 in that the upper part 16 and the lower part 17 of the Floor 9 each abutting, annular edges 20, 21 have. The edges 20, 21 are opposite to in FIG. 2 illustrated jacket 8 of the swirl pot 5 sealed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Hybrid Electric Vehicles (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

A fuel delivery unit for a motor vehicle, wherein a swirl pot has a base formed from an upper part and a lower part, and an outer wall connected to the base, forming a seal. The upper part and the lower part bound fuel-delivering regions of a suction jet pump and of a section of a feed line. This arrangement allows the fuel delivery unit to be produced at particularly low cost.

Description

Die Erfindung betrifft eine Kraftstoff-Fördereinheit für ein Kraftfahrzeug mit einer in einem Schwalltopf angeordneten Kraftstoffpumpe zur Förderung von Kraftstoff aus dem Schwalltopf in eine Vorlaufleitung, mit einer Saugstrahlpumpe zur Förderung von Kraftstoff in den Schwalltopf, mit einer von der Kraftstoffpumpe zu einer Düse des Schwalltopfes führenden Treibmittelleitung und mit einem in den Schwalltopf mündenden Mischrohr der Saugstrahlpumpe, wobei der Schwalltopf einen an einem Boden befestigten Mantel aufweist, der Boden ein der Kraftstoffpumpe zugewandtes Oberteil und ein der Kraftstoffpumpe abgewandtes Unterteil aufweist, und wobei Oberteil und Unterteil gegeneinander abgedichtet sind und zwischen dem Oberteil und dem Unterteil des Bodens kraftstoffführende Bereiche angeordnet sind.The invention relates to a fuel delivery unit for a motor vehicle having a arranged in a surge pot fuel pump for delivering fuel from the swirl pot in a flow line, with a suction jet pump for conveying fuel into the swirl pot, with a leading from the fuel pump to a nozzle of the swirl pot Propellant line and with a opening into the swirl pot mixing tube of the ejector, wherein the swirl pot has a jacket attached to a bottom, the bottom of the fuel pump facing upper part and a fuel pump facing away base, and wherein the upper part and lower part are sealed against each other and between the upper part and the lower part of the bottom fuel-carrying areas are arranged.

Solche Kraftstoff-Fördereinheiten werden in heutigen Kraftfahrzeugen häufig eingesetzt und sind aus der Praxis bekannt. Bei den bekannten Kraftstoff-Fördereinheiten werden einzelne Bauteile in den meist einstückig gestalteten Schwalltopf eingesetzt und miteinander verbunden. Ein von der Kraftstoffpumpe weg ragender Anschluss für eine Vorlaufleitung ragt meist aus dem Schwalltopf heraus. Da ein in der Vorlaufleitung angeordneter Feinfilter jedoch häufig innerhalb des Schwalltopfes angeordnet ist, wird die Vorlaufleitung von der Kraftstoffpumpe wieder zurück in den Schwalltopf zu dem Feinfilter geführt. Weiterhin wird meist ein Abzweig von der Vorlaufleitung zu der zur Befüllung des Schwalltopfes vorgesehenen Saugstrahlpumpe geführt. Dies führt zu einem sehr großen Bauraum der bekannten Kraftstoff-Fördereinheit und zu einer aufwändigen Montage. Bekannte Kraftstoff-Fördereinheiten sind z.B. in der EP 0959242 A1 und der EP 1103717 A1 beschrieben.Such fuel delivery units are widely used in today's motor vehicles and are known in practice. In the known fuel delivery units, individual components are inserted into the generally one-piece swirl pot and connected to each other. A protruding from the fuel pump connection for a flow line usually protrudes from the swirl pot. However, since arranged in the flow line fine filter is often located within the baffle pot, the flow line is led by the fuel pump back into the swirl pot to the fine filter. Furthermore, usually a branch from the feed line to the provided for filling the surge pot suction jet pump is performed. This leads to a very large space of the known fuel delivery unit and a complex assembly. Known fuel delivery units are eg in the EP 0959242 A1 and the EP 1103717 A1 described.

Dabei lassen sich Teilbereiche von kraftstoffführenden Bereichen, wie der Leitungen, innerhalb des Bodens des Schwalltopfes anordnen. Das Oberteil und das Unterteil bilden vorzugsweise schalenförmige Bauteile, welche Abschnitte der Leitungen aufnehmen. Diese Leitungen müssen daher nicht mehr separat montiert werden. Von dem Schwalltopf abstehende Bauteile lassen sich hierdurch einfach vermeiden. Weiterhin ist es durch eine entsprechende Anordnung der Trennebene im Boden möglich, das Oberteil und das Unterteil jeweils als axial entformbare Spritzguss-Formteile zu fertigen.In this case, subregions of fuel-carrying areas, such as the lines, can be arranged within the bottom of the swirl pot. The upper part and the lower part preferably form cup-shaped components which receive portions of the lines. These cables therefore no longer have to be mounted separately. From the surge chamber protruding components can be easily avoided. Furthermore, it is possible by an appropriate arrangement of the parting plane in the bottom, to manufacture the upper part and the lower part in each case as an axially demolding injection molded parts.

Der Erfindung liegt das Problem zugrunde, eine Kraftstoff-Fördereinheit der eingangs genannten Art so weiterzubilden, dass sie besonders einfach und kompakt aufgebaut ist.The invention is based on the problem, a fuel delivery unit of the type mentioned in such a way that it is particularly simple and compact.

Die erfindungsgemäße Kraftstoff-Fördereinheit ist dadurch gekennzeichnet, dass die kraftstoffführenden Bereiche des Bodens einen von der Kraftstoffpumpe zu dem im Schwalltopf angeordneten Feinfilter führenden Abschnitt einer Vorlaufleitung aufweisen, wobei der Abschnitt der Vorlaufleitung teilweise von dem Oberteil und dem Unterteil des Bodens begrenzt ist. Vorzugsweise sind das Oberteil und das Unterteil jeweils halbschalenförmig gestaltet und liegen zur Begrenzung des Abschnitts der Vorlaufleitung aneinander an. Dies trägt zu einem besonders kompakten Aufbau der erfindungsgemäßen Kraftstoff-Fördereinheit bei.The fuel delivery unit according to the invention is characterized in that the fuel-carrying regions of the bottom have a section of a supply line leading from the fuel pump to the fine filter disposed in the surge pot, wherein the portion of the supply line is partially bounded by the upper part and the lower part of the bottom. Preferably, the upper part and the lower part are each designed half shell-shaped and are to limit the portion of the flow line to each other. This contributes to a particularly compact construction of the fuel delivery unit according to the invention.

Zur weiteren Vereinfachung des konstruktiven Aufbaus der erfindungsgemäßen Kraftstoff-Fördereinheit trägt es bei, wenn die kraftstoffführenden Bereiche des Bodens das Mischrohr der Saugstrahlpumpe aufweisen, wobei das Mischrohr teilweise von dem Oberteil und von dem Unterteil gebildet ist. Vorzugsweise sind das Oberteil und das Unterteil jeweils halbschalenförmig gestaltet und liegen zur Begrenzung des Mischrohres aneinander an. Dies trägt zu einem besonders kompakten Aufbau der erfindungsgemäßen Kraftstoff-Fördereinheit bei.To further simplify the structural design of the fuel delivery unit according to the invention, it is beneficial if the fuel-carrying regions of the bottom have the mixing tube of the suction jet pump, wherein the mixing tube is partially formed by the upper part and by the lower part. Preferably, the upper part and the lower part are each designed half-shell-shaped and are adjacent to the boundary of the mixing tube. This contributes to a particularly compact construction of the fuel delivery unit according to the invention.

Zur weiteren Verringerung der Anzahl der Bauteile der erfindungsgemäßen Kraftstoff-Fördereinheit trägt es bei, wenn das Oberteil des Bodens und der Mantel einen im Schwalltopf angeordneten Feinfilter abdichten.To further reduce the number of components of the fuel delivery unit according to the invention, it is beneficial if the upper part of the bottom and the jacket seal a fine filter arranged in the swirl pot.

Der bauliche Aufwand zur genauen Ausrichtung der Bauteile der Bodenplatte lässt sich gemäß einer anderen vorteilhaften Weiterbildung der Erfindung besonders gering halten, wenn das Oberteil und das Unterteil des Bodens jeweils aneinander liegende, ringförmige Ränder aufweisen. Vorzugsweise weisen das Oberteil und das Unterteil einander entsprechende Formschlussflächen auf, mit denen sie formschlüssig ineinander greifen.The structural complexity for precise alignment of the components of the base plate can be kept particularly low according to another advantageous embodiment of the invention, when the upper part and the lower part of the bottom each have adjacent, annular edges. Preferably, the upper part and the lower part have mutually corresponding form-fitting surfaces, with which they engage positively in one another.

Zur weiteren Vereinfachung der Ausrichtung der Bauteile des Schwalltopfes trägt es bei, wenn zumindest einer der Ränder des Oberteils oder des Unterteils gegenüber dem Mantel des Schwalltopfes abgedichtet sind. Weiterhin wird hierdurch der Boden des Schwalltopfes zuverlässig abgedichtet.To further simplify the alignment of the components of the swirl pot, it is beneficial if at least one of the edges of the upper part or of the lower part are sealed off from the jacket of the swirl pot. Furthermore, this will reliably seal the bottom of the swirl pot.

Das Mischrohr der Saugstrahlpumpe könnte beispielsweise in eine mit einem Bodenventil verschlossene Kammer des Schwalltopfes münden. Zur weiteren Verringerung der Anzahl der Bauteile der erfindungsgemäßen Kraftstoff-Fördereinheit trägt es jedoch bei, wenn das Mischrohr dichtend mit einem einstückig mit dem Mantel des Schwalltopfes gefertigten Steigrohr verbunden ist und wenn das Steigrohr bis in einen von dem Boden entfernten Bereich des vorgesehenen maximalen Füllstandes des Schwalltopfes geführt ist. Durch diese Gestaltung benötigt der Schwalltopf kein Bodenventil, da die Länge des Steigrohres den Füllstand im Schwalltopf begrenzt. Da das Steigrohr am Mantel des Schwalltopfes angeordnet ist und sich über einen Teilbereich dessen Höhe erstreckt, lässt sich der Schwalltopf zusammen mit dem Steigrohr besonders kostengünstig in einer axial entformbaren Spritzgussform fertigen.The mixing tube of the suction jet pump could, for example, open into a closed chamber of the surge pot with a bottom valve. To further reduce the number of components of the fuel delivery unit according to the invention, however, it contributes, when the mixing tube is sealingly connected to an integrally made with the jacket of the surge pot riser and if the riser into a remote from the ground area of the intended maximum level of the Swirl pot is guided. Due to this design, the swirl pot requires no bottom valve, since the length of the riser limits the level in the swirl pot. Since the riser pipe is arranged on the casing of the swirl pot and extends over a portion of its height, the swirl pot together with the riser tube can be manufactured particularly cost-effectively in an axially demoulding injection mold.

Zur weiteren Verringerung der Anzahl der Bauteile der erfindungsgemäßen Kraftstoff-Fördereinheit trägt es gemäß einer anderen vorteilhaften Weiterbildung der Erfindung bei, wenn ein von dem Feinfilter weg führender Abschnitt der Vorlaufleitung einstückig mit dem Mantel des Schwalltopfes gefertigt ist.To further reduce the number of components of the fuel delivery unit according to the invention it carries according to a Another advantageous development of the invention, when a leading away from the fine filter section of the flow line is made in one piece with the jacket of the baffle.

Die Montage der erfindungsgemäßen Kraftstoff-Fördereinheit gestaltet sich besonders einfach, wenn Anschlüsse der Düse der Saugstrahlpumpe und des Abschnitts der von der Kraftstoffpumpe zu dem Feinfilter führenden Vorlaufleitung senkrecht zu der Fläche des Bodens des Schwalltopfes ausgerichtet sind. Durch diese Gestaltung lässt sich die Kraftstoffpumpe einfach axial auf die Anschlüsse aufstecken und ist dabei vollständig montiert. Ein Ansauganschluss der Kraftstoffpumpe mündet dabei vorzugsweise in den Bodenbereich des Schwalltopfes.The assembly of the fuel delivery unit according to the invention is particularly simple when connections of the nozzle of the suction jet pump and the portion of leading from the fuel pump to the fine filter feed line are aligned perpendicular to the surface of the bottom of the swirl pot. This design makes it easy to attach the fuel pump axially on the connections and is fully assembled. An intake port of the fuel pump preferably opens into the bottom region of the surge pot.

Die Erfindung lässt zahlreiche Ausführungsformen zu. Zur weiteren Verdeutlichung ihres Grundprinzips ist eine davon in der Zeichnung dargestellt und wird nachfolgend beschrieben. Diese zeigt in

Fig. 1
schematisch eine Kraftstoff-Versorgungs- einrichtung für eine Brennkraftmaschine eines Kraftfahrzeuges mit einer erfindungsgemäßen Kraftstoff-Fördereinheit.
Fig. 2
eine Schnittdarstellung der erfindungsgemäßen Kraftstoff-Fördereinheit aus Figur 1,
Fig. 3
stark vergrößert eine Schnittdarstellung eines Bodens eines Schwalltopfes der erfindungsgemäßen Kraftstoff-Fördereinheit aus Figur 1.
The invention allows numerous embodiments. To further clarify its basic principle, one of them is shown in the drawing and will be described below. This shows in
Fig. 1
schematically a fuel supply device for an internal combustion engine of a motor vehicle with a fuel delivery unit according to the invention.
Fig. 2
a sectional view of the fuel delivery unit according to the invention FIG. 1 .
Fig. 3
greatly enlarges a sectional view of a bottom of a surge chamber of the fuel delivery unit according to the invention FIG. 1 ,

Figur 1 zeigt schematisch eine in einem Kraftstoffbehälter 1 eines Kraftfahrzeuges angeordnete Kraftstoff-Fördereinheit 2 zur Förderung von Kraftstoff zu einer Brennkraftmaschine 3 eines Kraftfahrzeuges. Die Kraftstoff-Fördereinheit 2 saugt Kraftstoff aus dem Bodenbereich des Kraftstoffbehälters 1 an und fördert diesen in eine zu der Brennkraftmaschine 3 führende Vorlaufleitung 4. FIG. 1 schematically shows a arranged in a fuel tank 1 of a motor vehicle fuel delivery unit 2 for conveying fuel to an internal combustion engine 3 of a motor vehicle. The fuel delivery unit 2 sucks fuel from the bottom area of the fuel tank 1 and promotes this in a leading to the engine 3 feed line. 4

Figur 2 zeigt stark vergrößert eine Schnittdarstellung der Kraftstoff-Fördereinheit 2 aus Figur 1 mit einer in einem Schwalltopf 5 angeordneten, elektrisch betriebenen Kraftstoffpumpe 6. In dem Schwalltopf 5 ist zudem ein Feinfilter 7 angeordnet. Der Schwalltopf 5 weist einen mit einem Mantel 8 verbundenen Boden 9 auf. Der Boden 9 und der Mantel 8 dichten den Feinfilter 7 ab. Der Boden 9 weist zudem eine Saugstrahlpumpe 10 auf. Die Saugstrahlpumpe 10 wird von der Kraftstoffpumpe 6 mit Kraftstoff als Treibmittel versorgt, saugt Kraftstoff aus der Umgebung des Schwalltopfes 5 an und fördert diesen in den Schwalltopf 5. Hierfür weist die Saugstrahlpumpe 10 eine mit der Kraftstoffpumpe 6 verbundene Düse 11 auf. Der Mantel 8 des Schwalltopfes 5 ist einstückig mit einem Steigrohr 12 verbunden. Das Steigrohr 12 ist an einem in dem Boden 9 angeordneten Mischrohr 13 der Saugstrahlpumpe 10 angeschlossen. Weiterhin führt ein Abschnitt 14 der Vorlaufleitung 4 von der Kraftstoffpumpe 6 zu dem Feinfilter 7 durch den Boden 9. Ein weiterer, in Strömungsrichtung gesehen hinter dem Feinfilter 7 angeordneter Abschnitt 15 der Vorlaufleitung 4 ist einstückig mit dem Mantel 8 des Schwalltopfes 5 gefertigt. FIG. 2 shows greatly enlarged a sectional view of the fuel delivery unit 2 from FIG. 1 with a arranged in a swirl pot 5, electrically operated fuel pump 6. In the swirl pot 5, a fine filter 7 is also arranged. The swirl pot 5 has a base 9 connected to a jacket 8. The bottom 9 and the jacket 8 seal the fine filter 7. The bottom 9 also has an ejector 10. The suction jet pump 10 is supplied with fuel from the fuel pump 6 as a propellant, sucks in fuel from the environment of the swirl pot 5 and promotes this in the swirl pot 5. For this purpose, the ejector 10 has a nozzle 11 connected to the fuel pump. The jacket 8 of the swirl pot 5 is integrally connected to a riser 12. The riser 12 is connected to a arranged in the bottom 9 mixing tube 13 of the suction jet pump 10. Furthermore, a section 14 of the supply line 4 leads from the fuel pump 6 to the fine filter 7 through the bottom 9. Another, viewed in the flow direction behind the fine filter 7 section 15 of the flow line 4 is made in one piece with the jacket 8 of the swirl pot 5.

Figur 3 zeigt stark vergrößert den Boden 9 des Schwalltopfes 5 aus Figur 1. Hierbei ist zu erkennen, dass der Boden 9 ein Oberteil 16 und ein dichtend mit dem Oberteil 16 verbundenes Unterteil 17 aufweist. Das Oberteil 16 und das Unterteil 17 bilden jeweils ein Teil des Mischrohrs 13 der Saugstrahlpumpe 10 und den von der Kraftstoffpumpe 6 zu dem Feinfilter 7 führenden Abschnitt 14 der Vorlaufleitung 4. Anschlüsse 18 des zwischen der Kraftstoffpumpe 6 und dem Feinfilter 7 angeordneten Abschnitts 14 der Vorlaufleitung 4 und der Saugstrahlpumpe sind senkrecht zu der Fläche am Boden 9 ausgerichtet, so dass sich die in Figur 2 dargestellte Kraftstoffpumpe 6 zur Montage einfach aufstecken lässt. Weiterhin zeigt Figur 3, dass das Oberteil 16 und das Unterteil 17 des Bodens 9 jeweils aneinander liegende, ringförmige Ränder 20, 21 aufweisen. Die Ränder 20, 21 sind gegenüber dem in Figur 2 dargestellten Mantel 8 des Schwalltopfes 5 abgedichtet. FIG. 3 shows greatly enlarged the bottom 9 of the swirl pot 5 from FIG. 1 , It can be seen here that the base 9 has an upper part 16 and a lower part 17 sealingly connected to the upper part 16. The upper part 16 and the lower part 17 each form a part of the mixing tube 13 of the suction jet pump 10 and leading from the fuel pump 6 to the fine filter section 14 14 of the supply line 4. Connections 18 of disposed between the fuel pump 6 and the fine filter section 14 of the flow line 4 and the suction jet pump are aligned perpendicular to the surface at the bottom 9, so that in FIG. 2 shown fuel pump 6 can be easily attached for mounting. Further shows FIG. 3 in that the upper part 16 and the lower part 17 of the Floor 9 each abutting, annular edges 20, 21 have. The edges 20, 21 are opposite to in FIG. 2 illustrated jacket 8 of the swirl pot 5 sealed.

Claims (8)

  1. Fuel delivery unit for a motor vehicle, having a fuel pump, which is arranged in a swirl pot, for delivering fuel from the swirl pot into a feed line, having a suction jet pump for delivering fuel into the swirl pot, having a propellant line which leads from the fuel pump to a nozzle of the swirl pot, and having a mixing tube, which opens out into the swirl pot, of the suction jet pump, with the swirl pot having a casing which is fastened to a base, the base (9) has an upper part (16), which faces toward the fuel pump (6), and a lower part (17), which faces away from the fuel pump (6), and the upper part (16) and lower part (17) being sealed off with respect to one another and fuel-guiding regions being arranged between the upper part (16) and the lower part (17) of the base (9), characterized in that the fuel-guiding regions of the base (9) have a section, which leads from the fuel pump (6) to the fine filter (7) which is arranged in the swirl pot (5), of a feed line (4), with the section (14) of the feed line (4) being delimited partially by the upper part (16) and the lower part (17) of the base (9).
  2. Fuel delivery unit according to Claim 1, characterized in that the fuel-guiding regions of the base (9) have the mixing tube (13) of the suction jet pump (10), with the mixing tube (13) being formed partially by the upper part (16) and by the lower part (17).
  3. Fuel delivery unit according to at least one of the preceding claims, characterized in that the upper part (16) of the base (9) and the casing (8) seal off a fine filter (7) which is arranged in the swirl pot (5).
  4. Fuel delivery unit according to at least one of the preceding claims, characterized in that the upper part (16) and the lower part (17) of the base (9) each have annular edges (20, 21) which bear against one another.
  5. Fuel delivery unit according to at least one of the preceding claims, characterized in that at least one of the edges (20, 21) of the upper part (16) or of the lower part (17) are sealed off with respect to the casing (8) of the swirl pot (5).
  6. Fuel delivery unit according to at least one of the preceding claims, characterized in that the mixing tube (13) is sealingly connected to a riser tube (12) which is formed in one piece with the casing (8) of the swirl pot (5) and in that the riser tube (12) extends into a region, which is remote from the base (9), of the intended maximum filling level of the swirl pot (5).
  7. Fuel delivery unit according to at least one of the preceding claims, characterized in that a section (15), which leads away from the fine filter (7), of the feed line (4) is formed in one piece with the casing (8) of the swirl pot (5).
  8. Fuel delivery unit according to at least one of the preceding claims, characterized in that ports (18, 19) of the nozzle (11) of the suction jet pump (10) and of the section (14) of the feed line (4), which leads from the fuel pump (6) to the fine filter (7), are aligned perpendicular to the surface of the base (9) of the swirl pot (5).
EP07820186A 2006-09-18 2007-09-13 Fuel delivery unit for a motor vehicle Not-in-force EP2066518B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006043695A DE102006043695A1 (en) 2006-09-18 2006-09-18 Fuel delivery unit for a motor vehicle
PCT/EP2007/059645 WO2008034757A1 (en) 2006-09-18 2007-09-13 Fuel delivery unit for a motor vehicle

Publications (2)

Publication Number Publication Date
EP2066518A1 EP2066518A1 (en) 2009-06-10
EP2066518B1 true EP2066518B1 (en) 2010-11-10

Family

ID=38805805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07820186A Not-in-force EP2066518B1 (en) 2006-09-18 2007-09-13 Fuel delivery unit for a motor vehicle

Country Status (8)

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US (1) US8069844B2 (en)
EP (1) EP2066518B1 (en)
JP (1) JP4922403B2 (en)
KR (1) KR101396660B1 (en)
CN (1) CN101516664B (en)
AT (1) ATE487633T1 (en)
DE (2) DE102006043695A1 (en)
WO (1) WO2008034757A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102012108273A1 (en) * 2012-09-06 2014-03-06 Emitec Denmark A/S Plastic tank for a working fluid
IL284291B1 (en) 2014-12-19 2024-10-01 Lundbeck Seattle Biopharmaceuticals Inc Humanized anti-acth antibodies and use thereof

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Publication number Priority date Publication date Assignee Title
DE4242242C2 (en) * 1992-12-15 2003-04-30 Bosch Gmbh Robert Device for supplying the internal combustion engine of a motor vehicle with fuel present in a storage tank
JP3967799B2 (en) * 1997-08-29 2007-08-29 京三電機株式会社 In-tank fuel filter
US5960775A (en) * 1997-12-08 1999-10-05 Walbro Corporation Filtered fuel pump module
FR2778948B1 (en) 1998-05-19 2002-03-08 Bitron France FUEL PUMP ASSEMBLY AND MOTOR VEHICLE TANK PROVIDED WITH SUCH A PUMP ASSEMBLY
US6155793A (en) 1999-06-08 2000-12-05 Walbro Corporation Recessed fuel pump module
DE19932684C2 (en) * 1999-07-13 2001-05-17 Bosch Gmbh Robert Reservoir for conveyor modules
EP1103717B1 (en) * 1999-11-23 2005-03-23 Siemens Aktiengesellschaft Pump unit disposed in a surge chamber of a fuel tank of a vehicle
DE19961923A1 (en) 1999-12-22 2001-07-05 Bosch Gmbh Robert Fuel delivery module for vehicle has jet pump that pumps fuel from fuel tank to storage container next to feed assembly, connected to flow channel by channel on storage container floor
DE29922473U1 (en) * 1999-12-22 2001-05-03 Robert Bosch Gmbh, 70469 Stuttgart Fuel delivery module for motor vehicles
DE10028458A1 (en) * 2000-06-08 2001-12-13 Bosch Gmbh Robert System for conveying fuel from storage tank to IC engine of motor vehicle with reservoir in tank contg. delivery set with jet pump which is part amount of fuel delivered from set and delivers fuel from storage tank in reservoir
DE10044610B4 (en) * 2000-09-09 2006-05-18 Siemens Ag Filter module for a fuel delivery unit and fuel delivery unit for a motor vehicle
DE10328206A1 (en) * 2003-06-24 2005-01-13 Robert Bosch Gmbh Fuel supply system for internal combustion engine has electric fuel pump in inner chamber in tank and has throttle in line to suction jet pump made in one piece with preliminary filter
DE102006003420B4 (en) 2006-01-24 2008-02-14 Siemens Ag delivery unit

Also Published As

Publication number Publication date
US8069844B2 (en) 2011-12-06
WO2008034757A1 (en) 2008-03-27
JP2010503797A (en) 2010-02-04
KR20090055634A (en) 2009-06-02
EP2066518A1 (en) 2009-06-10
US20090266341A1 (en) 2009-10-29
ATE487633T1 (en) 2010-11-15
CN101516664A (en) 2009-08-26
JP4922403B2 (en) 2012-04-25
DE102006043695A1 (en) 2008-03-27
DE502007005630D1 (en) 2010-12-23
CN101516664B (en) 2013-05-29
KR101396660B1 (en) 2014-05-16

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